<template>
  <div>
    <van-row @click="openModal">
      <van-col span="6">
        <img :src="avatarSrc" alt />
      </van-col>
      <van-col span="15">{{ nickname }}</van-col>
      <van-col span="3">
        <van-icon name="arrow" />
      </van-col>
    </van-row>
    <van-grid :column-num="3" square>
      <van-grid-item icon="photo-o" text="文字" />
      <van-grid-item icon="photo-o" text="文字" />
      <van-grid-item icon="photo-o" text="文字" />
      <van-grid-item icon="cross" text="退出登陆" @click="logout" v-show="showLogout"/>
    </van-grid>
    <transition name="van-fade">
      <div class="login-modal" v-show="isShowModal">
        <div class="close-modal" @click="isShowModal = !isShowModal"></div>
        <van-form @submit="onSubmit" class="login-form">
          <van-field
            v-model="username"
            name="用户名"
            label="用户名"
            placeholder="用户名"
            :rules="[{ required: true, message: '请填写用户名' }]"
          />
          <van-field
            v-model="password"
            type="password"
            name="密码"
            label="密码"
            placeholder="密码"
            :rules="[{ required: true, message: '请填写密码' }]"
          />
          <div style="margin: 16px">
            <van-button round block type="info" native-type="submit">
              提交
            </van-button>
          </div>
        </van-form>
      </div>
    </transition>
  </div>
</template>

<script>
import { goLogin } from "@/request/api";
export default {
  data() {
    return {
      avatarSrc: require("../assets/avatar.png"),
      username: "",
      password: "",
      isShowModal: false,
      nickname: "用户登录",
      showLogout: false
    }
  },
  created() {
    // 组件刚创建的时候需要判断用户有没有登录，获取localStorage有没有token值，
    // 如果有token，就表示登录，就应该填上用户信息
    const token = localStorage.getItem("token");
    if (token) {
      // 表示已经有登录状态，就要网页面上渲染用户信息
      const userInfo = JSON.parse(localStorage.getItem("userInfo"));
      this.nickname = userInfo.nickname;
      this.avatarSrc = userInfo.avatar;
    }
  },
  methods: {
    onSubmit(values) {
      // console.log('username', values["用户名"]);
      // console.log('pwd', values["密码"]);
      this.isShowModal = !this.isShowModal;
      const username = values["用户名"];
      const pwd = values["密码"];
      goLogin({ username, pwd }).then(res => {
        // let _this = this
        console.log(res)
        if (res.errno === 0) {
          console.log(res.data);
          // 登录成功了
          // 登录的业务逻辑
          // 1、提示框提示登录成功
          this.$toast.success("登录成功");
          // 2、把token保存到本地存储
          localStorage.setItem("token", res.data.token);
          localStorage.setItem("userInfo", JSON.stringify(res.data.userInfo));
          // 3、1s后关闭模态窗口
          setTimeout(() => {
            // 4、把拿到的userInfo用户信息，填写到页面上
            this.nickname = res.data.userInfo.nickname;
            this.avatarSrc = res.data.userInfo.avatar;
            this.showLogout = true
          }, 1000);
        }
      })
    },
    openModal() {
      // 判断用户是否登录，如果登录直接就return，没有登录就isShowModal取反
      const token = localStorage.getItem("token");
      if (token) {
        return
      }
      this.isShowModal = !this.isShowModal
    },
    // 退出登陆
    logout() {
      this.$dialog.confirm({
        title: '登出账号确认',
        message: '您是否想要退出当前账号？'
      })
        .then(() => {
          // on confirm
          localStorage.removeItem('token')
          this.$toast.success('退出登陆成功')
          this.showLogout = false
          this.$router.go(0);
        })
        .catch(() => {
          // on cancel
        });
    }
  }
}
</script>

<style lang="less" scoped>
.login-modal {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 99;
  .login-form {
    padding: 1.1rem 0 0;
    border-radius: 1rem;
    width: 90%;
    background-color: #fff;
    position: absolute;
    left: 50%;
    top: 35%;
    margin-left: -45%;
  }
  .close-modal {
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
  }
}
.van-row {
  padding: 1.5rem 7%;
  background: #5c5d6b;
  color: #fff;
  .van-col {
    line-height: 5rem;
    font-size: 1rem;
    img {
      width: 5rem;
      border-radius: 50%;
      display: block;
    }
    &:nth-child(2) {
      padding-left: 1rem;
    }
    &:last-child {
      text-align: right;
    }
  }
}
</style>
